WPF is what affects weapon speed. The amount you have is already decent. Another point in Weapon Master would be perfect, giving you 150+ WPF at level 30 (build 21/18).
But, in the end, it's all about skills. You just need to keep practising, and learn to counter-attack fast (reflexes), where your swings do the most damage, and footwork. Like Fatal1ty (the best Quake player) used to say: practise!, practise!, practise!